Telembanua, Ivin, 		Siboro, Hari, AND 		Tampubolon, Rameyanti.
" UPAYA PENINGKATAN HASIL BELAJAR FISIKA MENGGUNAKAN MODEL DIRECT INSTRUCTION BERBASIS BLENDED LEARNING SISWA KELAS XI SEMESTER GANJIL SMA METHODIST-2 TA 2021/2022" <em>JURNAL PENELITIAN FISIKAWAN</em> [Online], Volume 5 Number 1 (28 February 2022)